Grinding-machine.



No. 630,45l. Patented Aug. 8, I899.

v T. DELAHAY.

GRINDING MACHINE.

(Application filed Feb. 10, 1899.1 (No Model.) 2 Sheets-Sheet I.

.7 77 E @Iillk mfn 66S 68 [11V enfoi N0. 630,45l. Patented Au'g. 8, I399.

T. DELAHAY.

GRINDING MACHINE.

' (Applic ation filed Feb. 10, 1899.)

2 sheaf-Sheet 2.

(No Modal.)

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UNITED STATES ATENT THOMAS DELAllAY, or PEMBROKE, CANADA.

GRINDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 630,451, dated August 8, 1899.

Application filed February 10, 1899. Serial No. 705,211. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS DELAHAY, ironfounder, of the town of Pembroke, in the county of Renfrew and Province of Ontario, Canada, have invented certain new and useful Improvements in Grinding-lvlachines, of'

' which the following is a specification.

The object of my invention is to devise certain improvement-s upon a harvester-knife grinder, shown and described in United States Patent No. 323,244, of July 28, 1885, and has for its object the adaptation of the machine to different kinds of work and its adaptation to the grinding of harvester-teeth of irregular angles.

With this object in View my invention 0011- sists, essentially, of the means shown and described for removing the usual emery-wheel and substituting therefor emery-wheels suited for other kinds of work and ofthe means shown and described whereby the angle of the knife-holder may be readily altered.

Figure l is a perspective view of the machine. Fig. 2 is a perspective detail, partly in section, of the grinding-wheel, spindle, and bearings. Fig. 3 is a plan view of the under side of a portion of the base-plate of the machine.

In the drawings like letters of reference indicate corresponding parts in the different figures.

A is the base of the machine, and B a standard secured thereto. Upon the upper end of this standard is journaled one end of a link 0, upon the other end of which is journaled the grinding wheel frame D, upon which is journaled the spindle E of the grinding-wheel F, as hereinafter described. Upon the end of the spindle E is secured a gearpinion G, meshing with the-spur-wheel H, suitably journaled upon the link Q in line with the journal of the frame D. Revolving with the spur-wheel H is the pinion I, meshing with the internal gear-Wheel J, which is journaled upon the standard B in line with the journal of the link 0.

The parts heretofore described are substantially similar to those described in the previous patent referred to.

K is a knife-support carrier pivoted at or upon the base A. Two clamping-screws I) pass through slots in the base-plate and are screwed the base-plate. these screws it is evident the angle of the A again tightening up the clamping-screws.'

at the same time.

into nuts 0, which are held from turning by means of suitable ribs on the under side of (See Fig. 3.) By loosening knife-support carriers may be readily altered and the knife-carrier clamped as altered by L are the knife-supports, which are adapted to slide upon the knife-support carrier K in the same way as they were arranged to slide upon the ways shown in the patent referred to. These knife -support carriers are similarly longitudinally adj ustable upon the knife-support carrier by means of the clamping-screws M, working through suitable slots, as shown.

N is the knife-clamp; but as this is identical with the knife-clamp shown in the prior patent detailed description is unnecessary.

It is frequently found that the sides of the triangular space between two teeth of the reaper-knife are through improper grinding at different angles to the base of the knife. Asthe grinding-wheels are so shaped as to fit sides set at the same angle to the base, it becomes necessary to swing the knife-support horizontally either one way or the other to enable the grinding-wheel to grind both sides This is readily accomplished by swinging the knife-support carrier as previously described. It is also found in practice that if the knife lies perfectly level the operator in swinging the grinding-wheel backward and forward misses the point of the tooth. To obviate this dilficulty, the upper surface of each knife-support is inclined upwardly from the front toward the rear of the machine, so as to bring the points of the knife into the line of the swinging grindingwheel.

The novel features of my invention consist in the adj ustability of the knife-support carrier just described and in the method of supporting the grinding-wheel and its spindle, which I will now describe.

0 are bearing-pieces,which are scarfed onto the ends of the frame D and secured thereto by means of clamping-bolts 01. Within these bearing-pieces the spindle E is journaled. At one end of the spindle is a shoulder e.

(See Fig. 2.) At the other end is a screw threaded portion f, upon which is screwed a nut 9. When a wide grinding-wheel is used,

5 p are used on the spindle located one between the grinding-Wheel and the shoulder and the other between the grinding-wheel and the nut. By using sleeves of different lengths any width of grinding-wheel maybe used in the machine.

Q is the handle, which is secured to the frame D at or near its journaled end. (See Fig. 1.) In this figure the parts are shown in the position in which they will be when the machine is used for work other than grinding reaper-knives.

From the above description it will be seen that I have devised improvements which will make the machine betteradapted for all class of work than before.

What I claim as my invention is 1. In agrinding-machine a standard; a link journaled upon the standard; and a grinding-wheel frame journaled upon the said link, in combination with bearing-pieces removably secured at the free ends of the said frame; a spindle journaled therein; a shoulder near one end of the spindle; a screwthread out near the other end a nut screwed thereon; a grinding-wheel centrally located; a sleeve between the wheel and the shoulder; and a sleeve between the wheel and the nut, substantially as and for the purpose specified.

2. In a grinding-machine the combination of a spindle removably journaled in suitable bearings; a shoulder near one end of the spindle; a screw-thread out near the other ,end; a nut screwed thereon; a grindingwheel centrally located; a sleeve between the 'wheel and the shoulder; and a sleeve between the wheel and the nut, substantially as and for the purpose specified.

3. In a grinding-machine a base-plate, in combination with knife-supports and a knifesupport carrier pivoted upon the said baseplate and adjustably clamped thereto, substantially as and for the purpose specified.

4. In a grinding-machine a base-plate, in combination with a knife-support carrier pivoted thereon and adjustably clamped thereto; and knife-supports longitudinally adjusted upon the said carrier, substantially as and for the purpose specified.

Pembroke, Canada, J anuaryBO, 1899.

THOMAS DELAI-IAY.

In presence of J. H. REEVES, HELEN A. WRIGHT. 

